##############################################################################
#                 School Breakfast and Academic Achievement                  #
#                Published in Economics of Education Review                  #
#                 Cuadros-Menaca, Thomsen and Nayga (2022)                   #
##############################################################################

rm(list=ls()) #start clean
setwd('Your Directory')
library(ggplot2)
library(ggpubr)
library("cowplot")
library(DRDID)
library(did)
library(stargazer)

#Figure A18

Always_poor <- read.dta("Always_poor.dta")

set.seed(1814)
Att_ELA_Unconditional_AP_NT <- att_gt(yname = "ZELA", 
                                      tname = "GradeLevel", 
                                      idname = "ID", 
                                      gname = "Effgrade", 
                                      data = Always_poor, 
                                      xformla = NULL,
                                      est_method = "dr", 
                                      control_group = "nevertreated",  
                                      bstrap = TRUE, 
                                      biters = 1000, 
                                      print_details = FALSE, 
                                      clustervars = "SchoolLEA", 
                                      panel = TRUE) 

ggdid(Att_ELA_Unconditional_AP_NT, ylim=c(-.2,.4)) 